Overview
What is the purpose of the lymphatic system
transport excess fluid
immunity
tissue swelling is known as
edema
what is species resistance
one species that may be resistant to an infectious disease that another species might be affected by
what are antigens?
proteins, glycoproteins, or polysaccharides that are found on the surface of a cell and can elicit an immune response
what do IgG do?
activate complement
what are the smallest vessels of the lymphatic system
lymphatic capillaries
name the 3 lymphatic organs (we discussed)
lymph nodes
tonsils
spleen
what are the signs of inflammation
red, pain, swelling, heat
what is the primary function of T cells
provides cellular immune response in which T cells interact directly with antigens (or antigen bearing agents) to destroy them
where are IgA mostly found
exocrine gland secretions (breast milk, tears, nasal fluid, gastric juice, bile, and urine)
name of the fluid inside lymphatic vessels
lymph
what cells mature in the thymus
T lymphocytes (T cells)
what are some chemical barriers found in your body
mucous membranes, tears, HCl
what is the function of B cells
provide humoral immunity in which B cells interact indirectly, producing antibodies that destroy the antigens or antigen-bearing agent
what is the mechanism of artifically acquired immunity
vaccine
what are the names of the two collecting ducts?
right lymphatic duct
thoracic duct
the osmotic effect of plasma proteins that helps draw fluid back into the blood capillaries is known as
plasma colloid osmotic virus
what do interferons do?
interfere with neighboring cells. stimulates nearby cells to release chemicals to protect them from infection
what are the two function of helper T cells
interact with B cells and release cytotoxins, which activate the B cells
interact with cytotoxic T cells and release interleukin-2, which activates the cytotoxic T cell
What is type IV hypersensitvity
exposure to certain chemicals on skin
what lymphatic vessel ENTERS the lymph node
afferent lymphatic vessel
what is the difference (we discussed) in white pulp and red pulp of the spleen
white pulp is distributed in islands and packed with lymphocytes.
red pulp contains red blood cells
group of proteins in plasma and other body fluids. stimulate inflammation, attract phagocytes, and enhance phagocytosis
what do cytotoxic T cells do
combine with non-self antigens and release perforin (opens cell membrane and destroys the cells)
what are the two things the recipient and donor must have matched (or be very close) when tissues are transplanted
MHC molecules
blood type